The answer is C. 1080. i got this by multiplying 180 by 6.
where's the rest of question so I can help?
Yes, is subtraction, to get their "difference".
first off, let's convert the mixed fractions, to "improper", and then subtract.

Answer:no it is not
Step-by-step explanation: A rational number is a repeating number. This is a terminating number.
The missing angle would be 68 because the the triangles can be alternate exterior